The Bombardier is a NPC ally you can find during the mission Break Goldbrickers out of Wyvern hideout from Golden Roller (CoV, levels 15 - 20). There are two of them, and must be freed from Wyvern squads.
Once free, they will follow you and will attack any Wyvern mercenary in their aggro range.
During my mission, the Bombardiers had Lieutenant-class hit points and a faction of Gold Brickers. Expect several ambushes from Wyvern once you free each of them.
I have no idea if the mission would fail if any of them (or both) would be defeated. The mission objectives only mention Flashbang as the one you must protect. These guys aren't mentioned anywhere.
During the mission they will say the following, once free:
Bombardier: Let's get Flashbang outta here!
During my mission, he used the Bombardier typical attacks:
|Goldbrickers can fly through the use of their jet packs.|| |
(Ranged) Targeted Area of Effect, Energy, Foe -Resist
|The explosion of this sonic grenade affects all within the blast and is capable of reducing your resistances.|| |
Heavy Sonic Bolt Gun
Ranged, Energy, Heavy Damage, Foe -Resist
|The Goldbrickers wield sonic arms which are capable of reducing your resistances.|| |
Melee, Smash, Foe Knockback
|A Super Strength Punch is a powerful pummeling attack, and it may knock foes off their feet.|| |
|When all else fails, use your own 2 fists.|| |